BBC Learning Zone Clips

CLIP 11259

How likely is it you'll share a birthday with someone?

  How likely is it you'll share a birthday with someone?
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Key Info
  • How likely is it you'll share a birthday with someone?
  • Duration: 03:33
  • A reporter makes a bet with a passer-by about how many people they'd have to ask before they found two with a matching birthday. It turns out that you only need to ask 35 people for it to be very likely that you'll get a match, and the clip explains why.
  • Subject:

    Maths

       Topic:

    Statistics

  • Keywords: chance, date, combinations, permutations, statistics, probability
Ideas for use in class
  • Could be used as an enrichment activity on probability, or as an introduction to more advanced level work on permutations and combinations.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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